You will find lots of helpful info in the  online tech manual
 

New radio, with the front panel of the old one, used to cover the holes	Self-made heatshield   (made of 2 mm aluminium)

Soft-top mechanism "flip cover" hinge broken.  Fixed with a stainless steel wire.  (drill two holes and wrap the wire around the axle)

In order to avoid water infiltration, apply a thin coat of non-mineral gerase (silicone grease, vaseline...) to the indicated areas